/* ============================================================
   tm² accounting solutions — style.css
   Components and section layouts.
   ============================================================ */

/* ----- Header ----- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--bg) 88%, transparent);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 68px;
  padding-block: var(--space-3);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--text);
  font-weight: 600;
}

.brand:hover {
  color: var(--text);
}

.brand-mark {
  width: 42px;
  height: 40px;
  flex-shrink: 0;
  display: block;
  border-radius: var(--radius-sm);
  object-fit: cover;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-name {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  text-transform: none;
}

.brand-name sup {
  font-size: 0.65em;
  vertical-align: super;
  margin-left: 0.05em;
  letter-spacing: 0;
}

.brand-tag {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

@media (max-width: 520px) {
  .brand-text {
    display: none;
  }
}

/* ----- Nav ----- */
.primary-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  gap: var(--space-6);
  align-items: center;
}

.nav-list a {
  color: var(--text-muted);
  font-size: var(--text-sm);
  font-weight: 500;
  padding: var(--space-2) 0;
  position: relative;
  transition: color var(--dur-fast) var(--ease);
}

.nav-list a:hover {
  color: var(--text);
}

.nav-list a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-med) var(--ease);
}

.nav-list a:hover::after,
.nav-list a:focus-visible::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
}

.nav-toggle-bar {
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--dur-fast) var(--ease), opacity var(--dur-fast) var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  transform: translateY(6px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(4) {
  transform: translateY(-6px) rotate(-45deg);
}

@media (max-width: 760px) {
  .nav-toggle {
    display: inline-flex;
    order: 2;
  }
  .nav-list {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--bg-elev);
    border-bottom: 1px solid var(--border);
    padding: var(--space-4) var(--gutter);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--dur-med) var(--ease), opacity var(--dur-med) var(--ease),
      visibility 0s linear var(--dur-med);
  }
  .nav-list a {
    display: block;
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--border);
  }
  .nav-list a::after {
    display: none;
  }
  .primary-nav[data-open="true"] .nav-list {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    transition-delay: 0s;
  }
}

/* ----- Theme toggle ----- */
.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  transition: background-color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease),
    color var(--dur-fast) var(--ease);
}

.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.theme-toggle .icon {
  width: 18px;
  height: 18px;
}

[data-theme="light"] .icon-moon {
  display: block;
}
[data-theme="light"] .icon-sun {
  display: none;
}
[data-theme="dark"] .icon-moon {
  display: none;
}
[data-theme="dark"] .icon-sun {
  display: block;
}

/* ----- Sections ----- */
.section {
  padding-block: clamp(3.5rem, 8vw, 7rem);
  position: relative;
}

.section + .section {
  border-top: 1px solid var(--border);
}

.section-head {
  margin-bottom: var(--space-10);
  max-width: 60ch;
}

.section-heading {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-4);
}

.section-sub {
  color: var(--text-muted);
  font-size: var(--text-lg);
  max-width: 60ch;
}

.two-col {
  display: grid;
  gap: clamp(2rem, 5vw, 4rem);
  grid-template-columns: 1fr;
}

@media (min-width: 880px) {
  .two-col {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: start;
  }
}

/* ----- Hero ----- */
.section-hero {
  padding-block: clamp(3rem, 9vw, 6.5rem) clamp(3rem, 8vw, 6rem);
  background:
    radial-gradient(
      80% 60% at 85% 0%,
      var(--accent-soft) 0%,
      transparent 60%
    );
}

[data-theme="dark"] .section-hero {
  background: radial-gradient(80% 60% at 85% 0%, rgba(1, 170, 188, 0.10) 0%, transparent 65%);
}

.hero-grid {
  display: block;
}

.hero-heading {
  font-size: var(--text-hero);
  margin-bottom: var(--space-6);
  text-wrap: balance;
}

.lede {
  color: var(--text-muted);
  font-size: var(--text-lg);
  max-width: 55ch;
  margin-bottom: var(--space-8);
  text-wrap: pretty;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.85rem 1.4rem;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  transition: background-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease),
    border-color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
  white-space: nowrap;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--accent);
  color: var(--brand-on-accent);
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: var(--brand-on-accent);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
}

.hero-meta li {
  position: relative;
  padding-left: var(--space-4);
}

.hero-meta li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  transform: translateY(-50%);
}

/* ----- About prose ----- */
.prose p {
  font-size: var(--text-base);
  color: var(--text-muted);
  margin-bottom: var(--space-4);
  max-width: 62ch;
}

.prose p:last-child {
  margin-bottom: 0;
}

.prose em {
  color: var(--text);
  font-style: italic;
}

/* ----- Services ----- */
.services-head {
  text-align: left;
  max-width: 64ch;
}

.services-grid {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: 1fr;
}

@media (min-width: 720px) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.service-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6) var(--space-6);
  transition: border-color var(--dur-med) var(--ease), transform var(--dur-med) var(--ease),
    box-shadow var(--dur-med) var(--ease);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.service-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.service-num {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.1em;
}

.service-title {
  font-size: var(--text-xl);
}

.service-body {
  color: var(--text-muted);
  font-size: var(--text-base);
}

.service-list {
  display: grid;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--text);
  margin-top: auto;
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
}

.service-list li {
  position: relative;
  padding-left: var(--space-5);
}

.service-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 10px;
  height: 2px;
  background: var(--accent);
}

/* ----- Client portal ----- */
.section-portal {
  background: var(--bg);
}

.portal-panel {
  display: grid;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

@media (min-width: 880px) {
  .portal-panel {
    grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  }
}

.portal-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  box-shadow: var(--shadow-sm);
  display: grid;
  gap: var(--space-5);
  position: relative;
}

.portal-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border-top: 3px solid var(--accent);
  pointer-events: none;
}

.portal-kicker {
  font-size: var(--text-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
}

.portal-copy {
  color: var(--text-muted);
  font-size: var(--text-base);
  max-width: 48ch;
}

.portal-card .btn {
  justify-self: start;
}

/* ----- Contact ----- */
.section-contact {
  background: var(--surface);
}

[data-theme="dark"] .section-contact {
  background: var(--bg-elev);
}

.section-inquiry {
  background: var(--bg);
}

.contact-panel {
  display: grid;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

@media (min-width: 880px) {
  .contact-panel {
    grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  }
}

.contact-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(1.25rem, 3vw, 2rem);
  box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .contact-card {
  background: var(--bg);
}

.contact-grid .section-head {
  align-self: start;
}

.contact-meta {
  display: grid;
  gap: var(--space-4);
}

.contact-meta div {
  border-top: 1px solid var(--border);
  padding-top: var(--space-3);
}

.contact-meta dt {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.contact-meta dd {
  margin: 0;
  color: var(--text);
  font-size: var(--text-sm);
}

.contact-meta a,
.footer-meta a {
  color: var(--text);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-underline-offset: 0.18em;
}

.contact-meta a:hover,
.footer-meta a:hover {
  color: var(--accent);
}

.form-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(1.25rem, 3vw, 2rem);
  display: grid;
  gap: var(--space-4);
  box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .form-card {
  background: var(--bg);
}

.field {
  display: grid;
  gap: var(--space-2);
}

.field label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  background: var(--bg-elev);
  color: var(--text);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  font-family: inherit;
  transition: border-color var(--dur-fast) var(--ease), background-color var(--dur-fast) var(--ease);
}

.field input:hover,
.field select:hover,
.field textarea:hover {
  border-color: var(--text-faint);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--accent);
}

.field textarea {
  resize: vertical;
  min-height: 120px;
}

.field input[aria-invalid="true"],
.field select[aria-invalid="true"],
.field textarea[aria-invalid="true"] {
  border-color: #b91c1c;
  background: rgba(185, 28, 28, 0.04);
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3) var(--space-5);
  margin-top: var(--space-2);
}

.form-actions .btn {
  min-width: 160px;
}

.form-note {
  font-size: var(--text-xs);
  color: var(--text-faint);
  max-width: 38ch;
}

.form-status {
  font-size: var(--text-sm);
  font-weight: 500;
  margin: 0;
  min-height: 1.4em;
}

.form-status[data-state="success"] {
  color: var(--accent);
}

.form-status[data-state="error"] {
  color: #b91c1c;
}

[data-theme="dark"] .form-status[data-state="error"] {
  color: #f87171;
}

/* Confirmation panel replaces form on submit */
.form-card[data-submitted="true"] > :not(.form-confirmation) {
  display: none;
}

.form-confirmation {
  display: grid;
  gap: var(--space-4);
  text-align: left;
  padding: var(--space-4) 0;
}

.form-confirmation .check {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.form-confirmation h3 {
  font-size: var(--text-xl);
}

.form-confirmation p {
  color: var(--text-muted);
  font-size: var(--text-base);
  max-width: 50ch;
}

.form-confirmation .btn {
  align-self: start;
  margin-top: var(--space-2);
}

/* ----- Footer ----- */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg);
  padding-block: var(--space-10);
}

.footer-row {
  display: grid;
  gap: var(--space-3);
  align-items: center;
}

@media (min-width: 720px) {
  .footer-row {
    grid-template-columns: auto 1fr auto;
    gap: var(--space-6);
  }
  .footer-tag {
    text-align: center;
  }
  .footer-meta {
    text-align: right;
  }
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 600;
  font-size: var(--text-sm);
}

.footer-mark {
  width: 32px;
  height: 32px;
  display: block;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.footer-tag {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--text-muted);
  font-size: var(--text-base);
}

.footer-meta {
  font-size: var(--text-xs);
  color: var(--text-faint);
}